Flexible-sole shoe



Nov. 23 1926.

J. A. KELLY FLEXIBLE some: SHOE briginal Filed Apri 27v 1925 lNVE/V TOR A TTORNEY J'OEN A. KELLY, 0F BROOKLYN, NEW YORK.

FLEXIBLE-SOLE srton.

Application filed April 27,1823, Seria1-Ho.-634.938 .Een'ewed October 4. 1926.

This invention is-a 'flez tible sole shoe, a iharacteristic feature of. which of novelconstruction possessing the inherent quality of fiexibility,' wh ich insole is coibility to the end that the is stitched, and within the layer of wet proof operable with an upper impart to the resulting shoe the desired flexease and comfort 4 the insole is skeletonized In my invention,

by cutting out the middle longitu'dinal.por-j tion thereof at the forepart, and with such cut out (or died? out) p'artof the insole are combined a filler and tion being ofsuch portant functions, a desirable-wetproof quality to' the insole, and another functionis to, preclude distortion or stretching of the materials when the stitching and lasting. operations are performed on the upper and the insole. v

The filler is composed of a flexible material suitable for the purpose, the thickness of which is equal'substantially tothe thickness of the insole, and the form and dimensions of which filler correspond substantially I to the cutout 'ortion of the insole, whereby the filler is a apted tooccup Qproducedby the cut out, an

substantially so, with the bottom surfaces: of the',insole. I It is desirable to attach the skeletoni zed insole and the filler in a manner to retain them in fixed relation, and to this end it is preferred to stitch the for which-purpose aseam ofthe fherring bone variety is utilized;

top and 'The fabric is a layer composed of ip mpriate fibrous material, coated on one surface with an adhesive of a character to'preclude moisture, said material being ordinarily referred to as a wet prooof7,-'laver.' Said wetprooof layer is applied to the face of the insole on that side thereof against which the outsole is positioned. usual, the insole is provided with alip extending from one face thereoflagainst which lip the upper is lasted and to which said upper this lip is positioned to be cemented to the filler Other functions. and advantagelsi 0f 'th o ow n e-- yentio'n will ap ear from the scriptiontalren in connection with the rawin 's, wherein:

is an insole and an outsole to shoe is worn with a fabric, the eombina character as tose'cure imone of which is to impart .c'omunction with the composite 11 1 the opening said filler is leather constituting filler-and the, insole,

ing isclosed by the filler flush, or substantially so,

labor in-the production of "Thestitching by attached to the insole isiindicated at C. said usually of the herring bone.

the felt, :a fabric layer,

materialina manner.

and'to theinsole." I

thereof, Said igure 1 is a plan view of the cut out insole looking at the under facethereofand showingthe lip thereon.

Figure 2 is a top plan view of the insole "with the filler positioned within the cut out f '3 portion and illustrating the stitching. by it" which the filler and the insole are fixedly f attached.

Figure 3 is a a longitudinal section,

4 4, respectively,

. ure 5 is a cross section of applied to 'alast prior'to lasting the flipper,

said view-showing a stiffener layer ius'edin S01 i s" sole? serve the function of a temporar when lasting and stitching.

An insole A, composed of the usiial mhtelrial, leather, is cut out, at a, in the middle longitudinal portion'of the forepart, leaving portions intact and'continbelng provided on the fore- 1 the side and: end nous, said insole part and the shank with a lip a.

, B is-a filler for the opening or produced by:

cross section, and Figure 4;

on the lines 3 3 and of Figure 2, a sock lining being shown in Figure 4 on theinner face of the compositeinsolecutting out he insole, said-filler being corn- 1 sad of material suitablefor the pur ose, felt being preferred. The thickness of felt filler is equal to the thickness of the the insole, and the form and dimensions of said felt filler correspond to the cutout a of said insole.v The feltis f lacing said assembled with the insole by filler within the opening a where y the openand .the latter is 1 with the top and botttom surfaces of theinsole.

the-

The insole I and the filler .are not skived, thus saving.

the materials. which,

stitching being variety,so-called, with. the stitches passing alternately through the and the "insole, and

materials comprising crossing the-line of contact between the edges of the filler and the insole. D is a fabric layer compos material, a i,

a iece of with-alcoating o ,adhesiveydf'fon one face the shape anddimensions of the insole within the area bounded by-the lip a, fabric layer is positioned with its adhesively coated face-next to felt-andthe insole,

fibrous {material 195 "i fabric layerj corresponds [toi and'said' with the edges of said fabric layer quite filler affording close to the lip a. his fabric layer is laid smoothly against the insole and the felt filler, and its adhesive coating operates to cement the fabric layer firmly to the leather and felt materials composing the insole and the filler, said fabric being united by seam C to the insole and the felt.

An insole comprising the leather layer, the felt and the fabric possesses flexibility so desirable in shoe insoles, and such insole is produced economically and with a minimum of labor for the reason that the insole around the edges of opening a is not skived, nor are the edges of the felt material skived, these parts being simply cut out, assembled, and stitched together.

In lasting a shoe, the insole, is placed upon a last F as in Figure 4, tacks f are driven to confine the insole on said last, and a stiffening piece as E is laid over the insole and the felt filler, after which the piece E is tacked at g, the hp a extending up-. wardly. The upper is now lasted asusual, the lipis trimmed, and the outsole is attached, the lasting tacks f, g, being removed and the stiffener E displaced. After the shoe is made, a sock lining G is attached to. the upper face of the insole so as to cover the felt filler B and the stitches C, the felt a backing for ing so that it will remain in a smooth .non-

v wrinkled condition Within the shoe.

precludes stretching or distortion of the insole when the upper is lasted and stitched,

'and the adhesive coating 03 on the fabric "is of a wet proof character (rubber cement) so as to impart the required wet proof quality to the shoe. c

Having thus fully described the invention, what I claim as newand desire to secure by Letters Patent is:

An insole for flexible sole shoes comprising a layer provided in the forepart with an opening and having on one face thereof a lip positioned intermediate said opening and the edge of said layer a felt filler occupying the opening in said lawer, a second layer composed of wet-proof fabric adhesively united to the first layer and the felt filler, said second layer being attached to that face of the first layer on which is provided said lip and the edges of the second layer terminating close to the lip, and a zigzag scam the stitches of which pass alternately through the first layer and the felt filler, said scam operating to. attach the second layer to the first layer, on a line adjacent the lip.

In testimony whereof I-have hereto signed my name this 2nd day of. April 1923.

f JOHN A. KELLY. 

